Composition for the manufacture of tarred paper



UNITED STATES PATENT ()rrrcn.

lVILIJAllI B. LIIPTON, ()F PIT'ISRURG, PENNSYLVANIA.

COMPOSITION FOR THE MANUFACTURE OF TARRED PAPER.

SPECIFICATION forming part of Letters Patent N 0. 398,337, dated February 19, 1889.

I Application filed April 23, 1888. Serial No. 271,577. (No specimens.)

To all 20/1/0112 it may cmwernfl Be it known that I, WILLIAM B. LUPToN. a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have inventeda new and useful Improvement in Composition for the Manufacture of Tarred Paper; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to compositions for making tarpaper for roofing and other purposes. This tar-paper is generally formed by saturating a paper or felt with coaltar, the coal-tar entering all the pores of the paper or felt and filling the same, and so forming therewith a body which is substantially air, gas, and water tight, the tar-paper being formed in one, two, or more ply or layers, and in for1ning the paper of more than one ply two or more layers of saturated paper being united by a binding material formed of pitch and compressed together. The paper formed is largely used for roofing and other purposes, and is well adapted for the purpose; but it is necessarily black in. color, and the finish of the roof is necessarily formed of the same color, which in many cases imparts ratheran unsightly amiearance to the building covered, and many attempts have been made to form a tarimq'ior of other color than black, these at tempts having heretofore been unsuccessful, as it is found that the coal-tar will overcome the color in any paint or other ma terial employed to impart a color thereto, or in the paper after it is finished.

The object of my invention is to provide a composition for saturating the paper or felt so as to make a tar-paper of other colors, and so a roofing-paper is provided which is corresponding to or in harmony with the color of the building or structure on which it employed; and it consists, generally stated, in a composition for saturating paper or felt composed of pine-tar and suitable coloring-matter, it being found that, while the pine-tar is as well adapted to the purpose as coal-tar, the pine-tar can be colored by the coloring-matter mixed therewith, and will retain the color of such matter, and that the paper or felt saturated in such composition will take and retain the color thereof, and therefore that tarpapers of different pornu-ment colors can be 3 formed.

It also consists in a composition for binding together the sheets of saturated tar-paper, i composed of pine-tar, a coloring-matter, and a binding material, such composition enabling j me to form two or more layer tar-paper of any desired color.

To enable others skilled in the art to make and use my invention, I will describe the same more fully.

The paper or felt genmally employed for the purpose is the woolen roofingpaper or felt of the ordinary kind, such as that generally employed in forming the ordinary paper sat urated with coal-tar. The pin e-tar employed 1 is the ordinary pine-tar of commerce or the 1 allied wood-tars, such as those obtained. from the .lElurc-ey and other processes for the manufacture of acetic acid and wood-alcohol. To t prepare it for use, the pine-tar is heated in a suitable still or receptacle, and-while heated the coloring-niatter such as, in. making red paper, English Venetian red or other suitable ooloririg-matter, according to the color of the tar-paper to be formed-is mixed with the pine-tar until the desired shade or color obtained, thus forming the saturating composition. The paper is then immersed within the colored pine-tar, being passed through the same, and the pine-tar thoroughly saturating the paper and filling all pores therein, and the colored pine-tar imparting the color thereof to the paper saturated therewith, wlmther it be red, green, blue, yellow, or other color. It is found in practice that, whereas coal-tar will. destroy or overcome any coloring matter brought in contact therewith, the pine tar can be easily colored, and that the prop erties of the pine-tar are such that it will maintain rather than overcome the color iml parted thereto, and consequently the paper or felt saturated with the colored pine-tar will maintain the desired shade or color of the coloring-matter mixed with the pine-tar and tar-paper of dilfcrent shades or colors may be obtained.

In forming a two or more ply tar-paper the sheets of tar-paper, previously saturated, as above described, and of the color desired, are united by a suitable binding material or com position, the binding material which I have found best adapted to the purpose being formed of pine-tar having the coloring material mixed with it so as to bring it to substantially the same color as that of the paper, and in order to stiffen it having therein a suit able proportion of resin, lime, hydraulic cement, or other suitable stiffening agent which combines either chemically or mechanically therewith. This binding material is caused to flow between the two or more sheets as they are caused to pass between rolls and are pressed together, only such an amount of the binding material as is necessary to thoroughly saturate and unite the sheets being retained and the remainder thereof being pressed out by the rolls, the finished two or more ply paper formed having the necessary coloring therein, which is not liable to be destroyed by the binding material employed. I prefer to employ a binding material brought to substantially the same color as the sheets to be united,though this is not necessary, as the pine-tar itself will not act to destroy the coloring-matter Within the previously-saturated sheets, and for this purpose a binding material containing a pine-tar and a suitable stiffening agent I only maybe employed. However, as the binding material is forced under the pressure of the rolls into the pores of the tar-paper-a tarpaper of finer appearance and more prominent color can generally be obtained where the color is employed in this binding material.

By my improved composition I am thus enabled to produce tar-paper having one, two, or more ply or layer, and the tar-paper can be made of different shades or colors, so that, if desired, that tar-paper employed may be of a color corresponding to or in harmony with any building or structure on which it is used, and the necessity for the employment of black or dark-colored tar-paper is therefore entirely overcome.

That I claim as my invention, and desire to secure by Letters Patent, is

1. A composition for treating paper or felt in making tar-paper, composed of pine-tar and a coloring-matter, substantially as and for the purposes set forth.

2. A composition for treating paper or felt in making tar-paper, composed of pine-tar, :a

coloring-matter, and lime or other suitable stiffening agent, substantially as and forthe purposes set forth.

In testimony whereof I, the said WILLIAM B. LUPToN, have hereunto set my hand.

VILLIAM B. LUPTO'N.

Vitnesses:

RoBT. D. TOTTEN, J. N. CooKE. 

